EP4090112A1 - Pdcch-konfigurationsverfahren und endgerät - Google Patents

Pdcch-konfigurationsverfahren und endgerät Download PDF

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Publication number
EP4090112A1
EP4090112A1 EP21738436.1A EP21738436A EP4090112A1 EP 4090112 A1 EP4090112 A1 EP 4090112A1 EP 21738436 A EP21738436 A EP 21738436A EP 4090112 A1 EP4090112 A1 EP 4090112A1
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EP
European Patent Office
Prior art keywords
time
pdcch search
domain
coreset
pdcch
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Pending
Application number
EP21738436.1A
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English (en)
French (fr)
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EP4090112A4 (de
Inventor
Gen LI
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Publication of EP4090112A1 publication Critical patent/EP4090112A1/de
Publication of EP4090112A4 publication Critical patent/EP4090112A4/de
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a PDCCH configuration method and a terminal.
  • scheduling information and other control information are mainly carried through a physical downlink control channel (Physical Downlink Control Channel, PDCCH).
  • PDCCH Physical Downlink Control Channel
  • NR new Radio
  • SCS subcarrier Spacing
  • FFT Fast Fourier Transformation
  • Embodiments of the present invention provide a PDCCH configuration method and a terminal, so as to resolve existing problems of relatively low PDCCH transmission performance and relatively low PDCCH reception performance of terminals.
  • an embodiment of the present invention provides a PDCCH configuration method, applied to a terminal, where the method includes:
  • an embodiment of the present invention further provides a terminal, including:
  • an embodiment of the present invention further provides a terminal, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where when the computer program is executed by the processor, the steps of the PDCCH configuration method according to the first aspect are implemented.
  • an embodiment of this disclosure further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium.
  • a computer program is stored in the computer-readable storage medium.
  • the terminal after receiving the PDCCH search space configuration, can form the L PDCCH search subspaces based on the M coresets and the N time-domain monitoring positions, and receive the PDCCH in the L PDCCH search subspaces; where both M and N are integers greater than or equal to 1, and L is an integer greater than 1.
  • at least one coreset and at least one time-domain monitoring position are associated with the PDCCH search space configuration, and at least two PDCCH search subspaces can be formed, so that the terminal can perform PDCCH reception on the at least two PDCCH search subspaces, thereby improving PDCCH transmission performance and further improving PDCCH reception performance of terminals.
  • An embodiment of the present invention provides a PDCCH configuration method, and the PDCCH configuration method is applied to a terminal.
  • the PDCCH configuration method includes the following steps:
  • Step 101 Receive a PDCCH search space configuration, where the PDCCH search space configuration is associated with M control resource sets coresets and N time-domain monitoring positions.
  • the PDCCH search space configuration may be configuration information corresponding to a PDCCH search space.
  • the PDCCH search space configuration includes time-domain configuration information (for example, monitoring periodicity, slot offset, slot count, symbol position, and control resource set index), frequency-domain configuration information, and the like.
  • time-domain configuration information for example, monitoring periodicity, slot offset, slot count, symbol position, and control resource set index
  • frequency-domain configuration information for example, frequency-domain configuration information, and the like.
  • the PDCCH search space configuration is associated with one coreset and one time-domain monitoring position, so as to determine the time-domain configuration information and frequency-domain configuration information of the PDCCH search space.
  • both M and N are integers greater than 1 or equal to 1, that is, the PDCCH search space configuration received by the terminal is associated with at least one coreset and at least one time-domain monitoring position.
  • a quantity of the M coresets may be determined based on at least one of the following three schemes: Scheme 1:
  • the PDCCH search space configuration includes a coreset group, and the coreset group includes M coreset IDs.
  • coreset IDs correspond to different coresets
  • M coreset IDs included in the coreset group correspond to M coresets, so as to determine that the PDCCH search space configuration received by the terminal is associated with M different coresets, or associated with M independent coresets.
  • the PDCCH search space configuration is associated with one coreset ID and includes M active transmission configuration indicator (TCI) state parameters.
  • TCI transmission configuration indicator
  • the M coresets may be obtained based on one independently configured coreset and M TCI state parameters included in a coreset configuration.
  • the coreset configuration includes M active TCI state parameters.
  • the PDCCH search space configuration includes M coresets, the M coresets are different only in TCI state parameters, with all other parameters (such as frequency-domain position, interleaving configuration, precoding cycling configuration, and Aggregation parameter configuration) being the same.
  • the PDCCH search space configuration is associated with one coreset ID and includes M frequency-domain positions.
  • the M coresets may be obtained based on one independently configured coreset and M frequency-domain positions included in a coreset configuration.
  • the M frequency-domain positions may be obtained based on a plurality of independent physical resource block (Physical Resource Block, PRB) configurations, and/or based on one independent PRB configuration and a plurality of frequency-domain offsets.
  • PRB Physical Resource Block
  • the PDCCH search space configuration includes M coresets, and the M coresets may be different only in frequency-domain position, with all other parameters being the same.
  • a quantity of the N time-domain monitoring positions may be determined based on at least one of the following two schemes: Scheme 1:
  • the PDCCH search space configuration includes N independently configured time-domain monitoring positions.
  • the PDCCH search space configuration includes one independently configured time-domain monitoring position and N or N-1 time-domain offset groups.
  • the PDCCH search space configuration received by the terminal includes one independently configured time-domain monitoring position and N or N-1 time-domain offset groups.
  • the PDCCH search space configuration includes N time-domain monitoring positions. Time-domain offsets corresponding to the N time-domain monitoring positions are determined based on the time-domain offset groups and a time-domain offset of the independently configured time-domain monitoring position.
  • Step 102 Form L PDCCH search subspaces based on the M coresets and the N time-domain monitoring positions, where one PDCCH search subspace includes one coreset and one time-domain monitoring position.
  • the terminal can form at least two PDCCH search subspaces based on the received PDCCH search space configuration, and each PDCCH search subspace includes one coreset and one time-domain monitoring position.
  • the terminal may perform spreading and mapping based on values of M and N, or perform only mapping, to form the L PDCCH search subspaces.
  • the following uses several specific implementations for description.
  • M and N are both integers greater than 1
  • the step 102 may include: performing mapping on the M coresets and the N time-domain monitoring positions to form the L PDCCH search subspaces.
  • the PDCCH search space configuration is associated with a first coreset, a second coreset, a first time-domain monitoring position, and a second time-domain monitoring position. Mapping may be performed on the first coreset, the first time-domain monitoring position, and the second time-domain monitoring position to obtain two PDCCH search subspaces; or mapping may be performed on the second coreset, the first time-domain monitoring position, and the second time-domain monitoring position to obtain the other two PDCCH search subspaces.
  • the terminal may separately perform spreading on the three coresets to obtain six coresets, and then perform mapping on the six coresets obtained through spreading and the six time-domain monitoring positions associated with the PDCCH search space configuration, so that the six coresets are in one-to-one correspondence to the six time-domain monitoring positions, to form six PDCCH search subspaces.
  • the terminal may separately perform spreading on the three time-domain monitoring positions to obtain six time-domain monitoring positions, and then perform mapping on the six time-domain monitoring positions obtained through spreading and the six coresets associated with the PDCCH search space configuration, so that the six coresets are in one-to-one correspondence to the six time-domain monitoring positions, to form six PDCCH search subspaces.
  • Scheme 3 Perform spreading on the M coresets, perform spreading on the N time-domain monitoring positions, and perform mapping on coresets and time-domain monitoring positions obtained through spreading, to form the L PDCCH search subspaces.
  • the terminal may separately perform spreading on the three coresets and the three time-domain monitoring positions to obtain six coresets and six time-domain monitoring positions respectively, and then perform mapping on the six coresets and six time-domain monitoring positions obtained through spreading, to form six PDCCH search subspaces.
  • the PDCCH search space configuration is associated with only one time-domain monitoring position but a plurality of coresets.
  • the terminal does not perform spreading, and the PDCCH search space configuration is associated with only one time-domain monitoring position. Then, the terminal performs mapping on each coreset and the time-domain monitoring position, to form the L PDCCH search subspaces.
  • M 1
  • the coreset is a first coreset
  • N is an integer greater than 1
  • the step 102 may include: performing spreading on the first coreset to obtain a plurality of second coresets, and performing mapping on the first coreset, the plurality of second coresets, and the N time-domain monitoring positions, to form the L PDCCH search subspaces.
  • the PDCCH search space configuration is associated with only one coreset and a plurality of time-domain monitoring positions.
  • M 1
  • the coreset is a first coreset
  • N is an integer greater than 1
  • the step 102 may include: performing mapping on each time-domain monitoring position and the first coreset, to form the L PDCCH search subspaces.
  • the terminal does not perform spreading, and the PDCCH search space configuration is associated with only one coreset. Then, the terminal performs mapping on each time-domain monitoring position and the coreset, to form the L PDCCH search subspaces.
  • the terminal may perform spreading on the first coreset to obtain a plurality of second coresets, and then perform mapping on the first coreset, the second coresets, and the configured first time-domain monitoring position, to form the L PDCCH search subspaces.
  • the coreset is a first coreset
  • the time-domain monitoring position is a first time-domain monitoring position
  • the step 102 may include: performing spreading on the first time-domain monitoring position to obtain a plurality of second time-domain monitoring positions, and performing mapping on the first coreset, the first time-domain monitoring position, and the plurality of second time-domain monitoring positions, to form the L PDCCH search subspaces.
  • the terminal may perform spreading on the first time-domain monitoring position to obtain a plurality of second time-domain monitoring positions, and then perform mapping on the first time-domain monitoring position, the second time-domain monitoring position, and the configured first coreset, to form the L PDCCH search subspaces.
  • the terminal may perform spreading on the first coreset and the first time-domain monitoring position to obtain a plurality of second coresets and a plurality of second time-domain monitoring positions respectively; and then perform mapping on the first coreset, the plurality of second coresets, the first time-domain monitoring position, and the plurality of second time-domain monitoring positions, to form the L PDCCH search subspaces.
  • the number of second coresets is the same as the number of second time-domain monitoring positions.
  • Scheme 1 In a case that T-1 or T active TCI state parameters are configured for a search space, substitute TCI state parameters of the first coreset by the T-1 or T active TCI state parameters, to obtain T second coresets.
  • the number of second coresets that needs to be obtained through spreading can also be determined.
  • three active TCI state parameters may be configured for the search space, and then the three active TCI state parameters substitute TCI state parameters of three copied first coresets respectively to obtain three second coresets.
  • the terminal performs mapping on the three second coresets obtained through spreading and the time-domain monitoring position, to form at least three PDCCH search subspaces. For example, in a case that there are three time-domain monitoring positions, three or nine PDCCH search subspaces may be formed.
  • the three second coresets are different from the first coreset only in the TCI state parameter, with all other parameters (such as frequency-domain parameter, interleaving configuration, precoding cycling configuration, and aggregation parameter configuration) being the same.
  • This scheme may be implemented in QCL (Quasi Co-Location, quasi co-location) non-repetition mode.
  • two active TCI state parameters may be configured for the search space.
  • the two active TCI state parameters separately substitute a TCI state parameter of the first coreset to obtain two second coresets.
  • the terminal performs mapping on the two second coresets, the first coreset, and the time-domain monitoring position, to form at least three PDCCH search subspaces.
  • the number of second coresets that needs to be obtained through spreading can also be determined.
  • T-1 or T frequency-domain positions or frequency-domain offsets configured for the search space substitute the frequency-domain position of the first coreset, to form at least T second coresets.
  • a principle of this scheme is similar to that of scheme 1, and details are no longer described herein by using a specific example.
  • Scheme 3 In a case that the number of second coresets configured for a search space is T, perform spreading on the first coreset according to a first preset rule to obtain T second coresets.
  • the number T of second coresets that needs to be obtained through spreading has been configured for the search space, and then the terminal performs spreading on the first coreset according to the first preset rule to obtain the T second coresets.
  • the first coreset is spread in the QCL repetition mode to obtain T second coresets, and all parameters of the T second coresets (such as frequency-domain position, interleaving configuration, precoding cycling configuration, aggregation parameter configuration, and TCI state parameters) are the same as those of the first coreset.
  • the performing spreading on the first coreset according to the first preset rule includes:
  • the number of second coresets that needs to be obtained through spreading can also be determined. Then, continuous spreading is performed on the frequency-domain position of the first coreset. Continuous spreading on the frequency-domain position may be continuous spreading performed on the frequency-domain position of the first coreset based on a specific frequency-domain periodicity and frequency-domain offset, so as to obtain the T second coresets.
  • the TCI state parameters of the first coreset are activated to obtain T TCI state parameters, and then spreading is performed on the TCI state parameters of the first coreset based on the T TCI state parameters, for example, substituting the TCI state parameter of the first coreset, to obtain the T second coresets.
  • the performing spreading on the first time-domain monitoring position to obtain a plurality of second time-domain monitoring positions includes: in a case that the number of second time-domain monitoring positions configured for a search space is R, performing continuous spreading on the first time-domain monitoring position to obtain R second time-domain monitoring positions.
  • the terminal may determine how many second time-domain monitoring positions need to be spread.
  • the terminal may perform continuous spreading on the first time-domain monitoring position to obtain R second time-domain monitoring positions, and then perform mapping on the R second time-domain monitoring positions and the coreset, to form at least R PDCCH search subspaces.
  • the number of PDCCH search subspaces may be determined based on at least one of the following:
  • the number of PDCCH search subspaces may be explicitly configured by using radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the number of coresets that needs to be spread is explicitly configured in the RRC signaling, or the number of time-domain monitoring positions that needs to be spread is explicitly configured in the RRC signaling.
  • the number of PDCCH search subspaces may be determined based on the number M of coresets associated with the PDCCH search space configuration.
  • the PDCCH search space configuration is associated with three coresets, and in a case that spreading is not performed on the coreset, it can be determined that three PDCCH search subspaces need to be formed.
  • the number of PDCCH search subspaces may be determined based on the number N of time-domain monitoring positions associated with the PDCCH search space configuration.
  • the PDCCH search space configuration is associated with six time-domain monitoring positions, and in a case that spreading is not performed on the time-domain monitoring position, it can be determined that six PDCCH search subspaces need to be formed.
  • Step 103 Receive a PDCCH in the L PDCCH search subspaces.
  • L is an integer greater than 1, that is, the terminal can form at least two PDCCH search subspaces.
  • the step 103 may include: receiving the PDCCH in the L PDCCH search subspaces based on first assumption content, where the first assumption content includes at least one of the following:
  • the first assumption content includes: assuming that a PDCCH is sent in each PDCCH search subspace, that is, PDCCHs are sent in all the L PDCCH search subspaces, the terminal can perform PDCCH reception on each of the L PDCCH search subspaces.
  • the first assumption content includes: assuming that candidate PDCCH mapping is independently performed in each PDCCH search subspace, that is, candidate PDCCH mapping is independently performed in each of the L PDCCH search subspaces to map to the terminal. This ensures that the terminal can perform PDCCH reception in the L PDCCH search subspaces.
  • the first assumption content includes: assuming that the PDCCH sent in each PDCCH search subspace has a same preset parameter, and the preset parameter includes at least one of the following: a frequency-domain position, a control channel element (Control Channel Element, CCE) index, an aggregation level, a demodulation reference signal DM-RS (Dedicated Demodulation Reference Signals, dedicated demodulation reference signal) scrambling code, and PDCCH content.
  • the terminal performs PDCCH reception in the L PDCCH search subspaces with the same frequency-domain position.
  • the first assumption content includes: assuming that the PDCCH precoding cycling (precoding cycling) status on each PDCCH search subspace is prescribed by the protocol or configured by using RRC, for example, precoding cycling statuses of the L PDCCH search subspaces received by the terminal are configured based on the RRC, and the terminal performs PDCCH reception in the L PDCCH search subspaces.
  • the first assumption content includes: assuming that the number of blind decoding (Blind Decoding, BD) used in calculating the PDCCH search space is a function of the number of BDs in at least one PDCCH search subspace. For example, a BD of a first coreset and/or a first time-domain monitoring position corresponding to a first PDCCH search subspace is selected for calculating a BD of the PDCCH search space; or a maximum value, a minimum value, an average value, a sum value of BDs of all coresets and/or all time-domain monitoring position corresponding to all PDCCH search subspaces is selected for calculating the BD of the PDCCH search space.
  • BD Blind Decoding
  • the first assumption content includes: assuming that the number of control channel elements CCEs used in calculating the PDCCH search space is a function of the number of CCEs on at least one PDCCH search subspace. For example, a CCE of a first coreset and/or a first time-domain monitoring position corresponding to a first PDCCH search subspace is selected for calculating a CCE of the PDCCH search space; or a maximum value, a minimum value, an average value, a sum value of CCEs of all coresets and/or all time-domain monitoring position corresponding to all PDCCH search subspaces is selected for calculating the CCE of the PDCCH search space.
  • the first assumption content may include a plurality of assumptions in the foregoing assumptions.
  • the first assumption content includes: assuming that a PDCCH is sent in each PDCCH search subspace, and assuming that the PDCCH precoding cycling status in each PDCCH search subspace is prescribed by the protocol or configured by using RRC.
  • the first assumption content may alternatively be a combination of other assumption content, and details are not repeated herein.
  • the method may further include: receiving a physical downlink shared channel (Physical Downlink Control Channel, PDSCH), where the PDSCH is a PDSCH scheduled by a PDCCH sent in the L PDCCH search subspaces.
  • PDSCH Physical Downlink Control Channel
  • the terminal after performing PDCCH reception in the L PDCCH search subspaces, the terminal can also perform PDSCH reception.
  • the receiving a PDSCH includes: receiving the PDSCH based on second assumption content, where the second assumption content includes at least one of the following:
  • the terminal may assume that the TB content and TB size of the PDSCHs that are scheduled by the PDCCHs sent in the L PDCCH search subspaces are the same, and based on this assumption content, the terminal performs PDSCH reception in the L PDCCH search subspaces.
  • TCI states of the PDSCHs scheduled by the PDCCHs sent in the L PDCCH search subspaces are associated with each other may be that TCI state parameters of the PDSCHs scheduled by the PDCCHs sent in the L PDCCH search subspaces are in correspondence to TCI state parameters of corresponding coresets and/or time-domain monitoring positions, and the correspondence may be prescribed by the protocol or configured by using RRC signaling.
  • transport layers of the PDSCHs that are scheduled by the PDCCHs sent in the L PDCCH search subspaces are associated with each other may be that layer information of the PDSCHs scheduled by the PDCCHs sent in the L PDCCH search subspaces is in correspondence to corresponding coresets and/or time-domain monitoring positions.
  • the foregoing assumption that related time-domain factors of the PDSCHs scheduled by the PDCCHs sent in the L PDCCH search subspaces are calculated with reference to a reference time-domain position may be that the terminal selects a specific coreset of the M coresets to calculate related time-domain factors (for example, K0, K1, or K2) of a time line, for example, selecting the last symbol in one of the M coresets or a slot to which the last symbol belongs as a reference time point for calculation.
  • related time-domain factors for example, K0, K1, or K2
  • the second assumption content may include a plurality of assumptions in the foregoing assumptions, for example, the terminal may assume that the HARQ identifiers of the PDSCHs scheduled by the PDCCHs sent in the L PDCCH search subspaces are the same and/or associated with each other.
  • the second assumption content may alternatively be a combination of other assumption content, and details are not repeated herein.
  • the UE performs PDCCH reception on the PDCCH search subspace based on one or more of the following assumptions:
  • the UE performs PDSCH reception on the PDCCH search subspace based on one or more of the following assumptions:
  • Implementation 2 The PDCCH search space configuration received by the UE is associated with one coreset, a QCL non-repetition mode is configured or pre-defined, the time-domain position corresponding to each coreset is configured with one time-domain offset group (t1, t2, ..., tN), and the number of time-domain offset groups is N.
  • the number of coresets that is implicitly obtained through spreading for the PDCCH search subspace spreading is N+1.
  • a time-domain starting symbol of the configured PDCCH search subspace is S and the number of symbols of the coreset is L
  • the starting symbols of the M associated coresets are (S, S+ t1, ..., S+ tN).
  • N+1 needs to be less than or equal to the number of active TCI state parameters of the coreset, and the first N+1 TCI state parameters are TCI state parameters corresponding to each coreset.
  • the UE performs PDCCH reception on the PDCCH search subspace based on one or more of the following assumptions:
  • the UE performs PDSCH reception on the PDCCH search subspace based on one or more of the following assumptions:
  • the terminal receives the PDCCH search space configuration, and the PDCCH search space configuration is associated with M coresets and N time-domain monitoring positions, so that the terminal forms L PDCCH search subspaces based on the M coresets and N time-domain monitoring positions, and performs PDCCH reception in the L PDCCH search subspaces, where M and N are both integers greater than or equal to 1, and L is an integer greater than 1.
  • the number of coresets and that of time-domain monitoring positions associated with the PDCCH search space configuration are at least one, and at least two PDCCH search subspaces can be formed, so that the terminal can implement PDCCH reception in the at least two PDCCH search subspaces, thereby improving PDCCH transmission performance and further improving PDCCH reception performance of the terminal.
  • An embodiment of the present invention further provides a terminal.
  • the terminal 200 includes:
  • M and N are both integers greater than 1; and the forming module 202 is further configured to:
  • M 1
  • N 1
  • the forming module 202 is further configured to:
  • the forming module 202 is further configured to:
  • the forming module 202 is further configured to:
  • the forming module 202 is further configured to: in a case that the number of second time-domain monitoring positions configured for a search space is R, perform continuous spreading on the first time-domain monitoring position to obtain R second time-domain monitoring positions.
  • a quantity of the M coresets is determined based on at least one of the following:
  • a quantity of the N time-domain monitoring positions is determined based on at least one of the following:
  • a quantity of the PDCCH search subspaces is determined based on at least one of the following:
  • the second receiving module 203 is further configured to: receiving the PDCCH in the L PDCCH search subspaces based on first assumption content, where the first assumption content includes at least one of the following:
  • the preset parameter includes at least one of the following: frequency-domain position, CCE index, aggregation level, demodulation reference signal DM-RS scrambling code, and PDCCH content.
  • the terminal 200 further includes: a third receiving module, configured to receive a physical downlink shared channel PDSCH, where the PDSCH is a PDSCH scheduled by a PDCCH sent in the L PDCCH search subspaces.
  • a third receiving module configured to receive a physical downlink shared channel PDSCH, where the PDSCH is a PDSCH scheduled by a PDCCH sent in the L PDCCH search subspaces.
  • the third receiving module is further configured to: receive the PDSCH based on second assumption content, where the second assumption content includes at least one of the following:
  • this embodiment is an implementation of an apparatus corresponding to the PDCCH configuration method embodiment shown in FIG. 1 .
  • the terminal 200 After receiving the PDCCH search space configuration, the terminal 200 provided in this embodiment can form the L PDCCH search subspaces based on the M coresets and the N time-domain monitoring positions, and receive the PDCCH in the L PDCCH search subspaces; where both M and N are integers greater than or equal to 1, and L is an integer greater than 1.
  • at least one coreset and at least one time-domain monitoring position are associated with the PDCCH search space configuration, and at least two PDCCH search subspaces can be formed, so that the terminal can perform PDCCH reception on the at least two PDCCH search subspaces, thereby improving PDCCH reception performance of the terminal.
  • the terminal 300 is capable of implementing the processes of the PDCCH configuration method embodiment shown in FIG. 1 , with the same technical effects achieved.
  • the terminal 300 includes but is not limited to components such as a radio frequency unit 301, a network module 302, an audio output unit 303, an input unit 304, a sensor 305, a display unit 306, a user input unit 307, an interface unit 308, a memory 309, a processor 310, and a power supply 311.
  • a radio frequency unit 301 such as a radio frequency unit 301, a network module 302, an audio output unit 303, an input unit 304, a sensor 305, a display unit 306, a user input unit 307, an interface unit 308, a memory 309, a processor 310, and a power supply 311.
  • a radio frequency unit 301 such as a radio frequency unit 301, a network module 302, an audio output unit 303, an input unit 304, a sensor 305, a display unit 306, a user input unit
  • the terminal may include more or fewer components than those shown in the figure, or a combination of some components, or the components disposed differently.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a laptop computer, a personal digital assistant, an in-vehicle terminal, a wearable device, a pedometer, and the like.
  • the radio frequency unit 301 is configured to receive a PDCCH search space configuration, where the PDCCH search space configuration is associated with M control resource sets coresets and N time-domain monitoring positions.
  • the processor 310 is configured to form L PDCCH search subspaces based on the M coresets and the N time-domain monitoring positions, where one PDCCH search subspace includes one coreset and one time-domain monitoring position.
  • the radio frequency unit 301 is further configured to receive a PDCCH in the L PDCCH search subspaces; where M and N are both integers greater than or equal to 1, and L is an integer greater than 1.
  • M and N are both integers greater than 1; and the processor 310 is configured to:
  • M 1
  • N 1
  • the processor 310 is further configured to:
  • processor 310 is further configured to:
  • processor 310 is further configured to:
  • the processor 310 is further configured to: in a case that the number of second time-domain monitoring positions configured for a search space is R, perform continuous spreading on the first time-domain monitoring position to obtain R second time-domain monitoring positions.
  • a quantity of the M coresets is determined based on at least one of the following:
  • a quantity of the N time-domain monitoring positions is determined based on at least one of the following:
  • a quantity of the PDCCH search subspaces is determined based on at least one of the following:
  • the radio frequency unit 301 is further configured to: receive the PDCCH in the L PDCCH search subspaces based on first assumption content, where the first assumption content includes at least one of the following:
  • the preset parameter includes at least one of the following: frequency-domain position, CCE index, aggregation level, demodulation reference signal DM-RS scrambling code, and PDCCH content.
  • the radio frequency unit 301 is further configured to: receive a physical downlink shared channel PDSCH, where the PDSCH is a PDSCH scheduled by a PDCCH sent in the L PDCCH search subspaces.
  • the radio frequency unit 301 is further configured to: receive the PDSCH based on second assumption content, where the second assumption content includes at least one of the following:
  • the terminal 300 After receiving the PDCCH search space configuration, the terminal 300 provided in this embodiment of the present invention can form the L PDCCH search subspaces based on the M coresets and the N time-domain monitoring positions, and receive the PDCCH in the L PDCCH search subspaces; where both M and N are integers greater than or equal to 1, and L is an integer greater than 1.
  • at least one coreset and at least one time-domain monitoring position are associated with the PDCCH search space configuration, and at least two PDCCH search subspaces can be formed, so that the terminal can perform PDCCH reception on the at least two PDCCH search subspaces, thereby improving PDCCH reception performance of the terminal 300.
  • the radio frequency unit 301 may be configured to: receive and send signals in an information receiving/sending process or a call process; and specifically, after receiving downlink data from a base station, send the downlink information to the processor 310 for processing, and in addition, send uplink data to the base station.
  • the radio frequency unit 301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 301 may also communicate with a network and other devices via a wireless communications system.
  • the terminal 300 provides a user with wireless broadband internet access through the network module 302, for example, helping the user to transmit and receive e-mails, browse web pages, and access streaming media.
  • the audio output unit 303 may convert audio data received by the radio frequency unit 301 or the network module 302 or stored in the memory 309 into an audio signal and output the audio signal as a sound. Furthermore, the audio output unit 303 may also provide audio output (for example, a call signal received sound or a message received sound) related to a specific function performed by the terminal 300.
  • the audio output unit 303 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 304 is configured to receive an audio or video signal.
  • the input unit 304 may include a graphics processing unit (Graphics Processing Unit, GPU) 3041 and a microphone 3042.
  • the graphics processing unit 3041 processes image data of a still picture or video obtained by an image capture apparatus (such as a camera) in a video capture mode or an image capture mode.
  • a processed image frame may be displayed on the display unit 306.
  • the image frame processed by the graphics processing unit 3041 may be stored in the memory 309 (or another computer-readable storage medium) or be sent by the radio frequency unit 301 or the network module 302.
  • the microphone 3042 is capable of receiving sounds and processing such sounds into audio data.
  • the processed audio data may be converted in a telephone call mode into a format that can be transmitted by the radio frequency unit 301 to a mobile communications base station, for outputting.
  • the terminal 300 may further include at least one sensor 305, for example, an optical sensor, a motion sensor, and another sensor.
  • the optical sensor may include an ambient light sensor and a proximity sensor.
  • the ambient light sensor may adjust luminance of the display panel 3031 based on brightness of ambient light
  • the proximity sensor may turn off the display panel 3031 and/or backlight when the terminal 300 moves close to an ear.
  • an accelerometer sensor may detect the magnitude of acceleration in each direction (generally three axes), and in a stationary state, may detect the magnitude and direction of gravity, and may be used to recognize terminal postures (for example, shift between a landscape orientation and a portrait orientation, related games, and magnetometer posture calibration), and vibration recognition-related functions (such as a pedometer and knocking), and the like.
  • the sensor 305 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like. Details are not described herein again.
  • the display unit 306 is configured to display information input by the user or information provided to the user.
  • the display unit 306 may include a display panel 3031, and the display panel 3031 may be configured in a form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like.
  • LCD Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • the user input unit 307 may be configured to: receive a digit or character information that is input, and generate signal input related to user settings and function control of the terminal 300.
  • the user input unit 307 may include a touch panel 3071 and other input devices 3072.
  • the touch panel 3071 is also referred to as a touchscreen and can collect a touch operation (such as an operation performed by the user on the touch panel 3071 or near the touch panel 3071 with a finger or by using any proper object or accessory such as a stylus) of the user on or near the touch panel 3071.
  • the touch panel 3071 may include two parts: a touch detection apparatus and a touch controller.
  • the touch detection apparatus detects a touch azimuth of a user, detects a signal brought by a touch operation, and transmits the signal to the touch controller.
  • the touch controller receives touch information from the touch detection apparatus, converts the touch information into touchpoint coordinates, and transmits the touchpoint coordinates to the processor 310, and can receive a command transmitted by the processor 310 and execute the command.
  • the touch panel 3071 may be implemented in a plurality of forms, for example, as a resistive, capacitive, infrared, or surface acoustic wave touch panel.
  • the user input unit 307 may further include other input devices 3072.
  • the other input devices 3072 may include but are not limited to a physical keyboard, a function key (such as a volume control key or an on/off key), a trackball, a mouse, and a joystick. Details are not described herein.
  • the touch panel 3071 may cover the display panel 3031.
  • the touch panel 3071 transmits the touch operation to the processor 310 to determine a type of a touch event. Then, the processor 310 provides a corresponding visual output on the display panel 3031 based on the type of the touch event.
  • the touch panel 3071 and the display panel 3031 serve as two independent components to implement input and output functions of the terminal 300. In some embodiments, however, the touch panel 3071 may be integrated with the display panel 3031 to implement the input and output functions of the terminal 300. This is not specifically limited herein.
  • the interface unit 308 is an interface between an external apparatus and the terminal 300.
  • the external apparatus may include a wired or wireless headphone port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting an apparatus provided with a recognition module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like.
  • the interface unit 308 may be configured to: receive input (for example, data information and power) from the external apparatus, and transmit the received input to one or more elements in the terminal 300, or may be configured to transmit data between the terminal 300 and the external apparatus.
  • the memory 309 may be configured to store software programs and various data.
  • the memory 309 may primarily include a program storage area and a data storage area.
  • the program storage area may store an operating system, an application (such as an audio play function and an image play function) required by at least one function, and the like.
  • the data storage area may store data (such as audio data and a phone book) created based on use of the mobile phone.
  • the memory 309 may include a high-speed random access memory, and may further include a non-volatile memory such as at least one disk storage device, a flash memory device, or another volatile solid-state storage device.
  • the processor 310 is a control center of the terminal 300.
  • the processor 310 uses various interfaces and lines to connect all parts of the entire terminal 300, and performs various functions and data processing of the terminal 300 by running or executing the software program and/or module stored in the memory 309 and invoking data stored in the memory 309, thereby performing overall monitoring on the terminal 300.
  • the processor 310 may include one or more processing units.
  • the processor 310 may integrate an application processor and a modem processor.
  • the application processor mainly processes the operating system, a user interface, an application program, and the like.
  • the modem processor mainly processes wireless communication. It can be understood that the modem processor may alternatively be not integrated in the processor 310.
  • the terminal 300 may further include the power supply 311 (such as a battery) supplying power to each component.
  • the power supply 311 may be logically connected to the processor 310 by using a power management system, so that functions such as charge and discharge management and power consumption management are implemented by using the power management system.
  • the terminal 300 includes some functional modules that are not illustrated. Details are not described herein.
  • an embodiment of the present invention further provides a terminal, including a processor, a memory, and a computer program stored in the memory and running on the processor.
  • a terminal including a processor, a memory, and a computer program stored in the memory and running on the processor.
  • the computer program is executed by the processor, the processes of the foregoing PDCCH configuration method embodiment shown in FIG. 1 can be implemented, with the same technical effects achieved. To avoid repetition, details are not described herein again.
  • An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium.
  • a computer program is stored in the computer-readable storage medium.
  • the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disc.
  • a module, a unit, a submodule, a subunit, and the like may be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC), digital signal processors (Digital Signal Processor, DSP), digital signal processing devices (DSP Device, DSPD), programmable logic devices (Programmable Logic Device, PLD), field-programmable gate arrays (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and other electronic units for performing the functions described in this application, or a combination thereof.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • DSP Device digital signal processing devices
  • PLD programmable logic devices
  • FPGA field-programmable gate array
  • general-purpose processors controllers, microcontrollers, microprocessors, and other electronic units for performing the functions described in this application, or a combination thereof.
  • the software product is stored in a storage medium (such as a ROM/RAM, a magnetic disk, or an optical disc), and includes several instructions for instructing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, a network device, or the like) to perform the methods described in the embodiments of the present invention.
  • a storage medium such as a ROM/RAM, a magnetic disk, or an optical disc
  • a terminal which may be a mobile phone, a computer, a server, an air conditioner, a network device, or the like

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Electrotherapy Devices (AREA)
EP21738436.1A 2020-01-09 2021-01-04 Pdcch-konfigurationsverfahren und endgerät Pending EP4090112A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010023927.2A CN113115444B (zh) 2020-01-09 2020-01-09 一种pdcch配置方法及终端
PCT/CN2021/070067 WO2021139612A1 (zh) 2020-01-09 2021-01-04 一种pdcch配置方法及终端

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EP4090112A4 EP4090112A4 (de) 2023-07-05

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EP (1) EP4090112A4 (de)
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US10609689B2 (en) * 2017-02-02 2020-03-31 Sharp Kabushiki Kaisha Long physical uplink control channel (PUCCH) design for 5th generation (5G) new radio (NR)
WO2019031850A1 (ko) * 2017-08-11 2019-02-14 한국전자통신연구원 하향링크 제어 채널의 송수신 방법 및 이를 이용하는 장치
CN109391971B (zh) * 2017-08-11 2020-08-18 维沃移动通信有限公司 一种pdcch的搜索空间的配置、监听方法及设备
CN109691206A (zh) * 2017-09-14 2019-04-26 Oppo广东移动通信有限公司 用于传输信息的方法、终端设备和网络设备
CN111164930B (zh) * 2017-10-02 2022-08-09 瑞典爱立信有限公司 Pdcch搜索空间监控配置方法、网络节点和无线设备
CN109802814B (zh) * 2017-11-17 2021-07-23 展讯通信（上海）有限公司 控制资源集和pdcch监测时机的配置方法、装置及基站
WO2019112281A1 (en) * 2017-12-04 2019-06-13 Samsung Electronics Co., Ltd. Method and apparatus for transmitting uplink data in wireless communication system
CN110475262B (zh) * 2018-05-11 2021-08-06 中国移动通信有限公司研究院 一种准共址信息的配置方法、网络设备及用户设备

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EP4090112A4 (de) 2023-07-05
WO2021139612A1 (zh) 2021-07-15
US20220346073A1 (en) 2022-10-27
CN113115444B (zh) 2022-06-14
CN113115444A (zh) 2021-07-13

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